Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
App Overview
Grade Corner
Grade Corner is the fastest way for students and parents to check grades, schedules, assignments, and attendance as part of your daily routine without logging in every time.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
27,744 ratings · Top 5%
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Differentiate and validate
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Grade Corner: map the core Education workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Simplify the onboarding process with guided tours.
Assumption to check: Users feel overwhelmed by too many features.
Validate with people who use this workflow before building.
Hypothesis 2
Implement calendar integration for better visibility.
Assumption to check: Difficulty in tracking multiple assignments across classes.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to set their own notification preferences.
Assumption to check: Lack of customizable notifications.
Validate with people who use this workflow before building.
Hypothesis 4
Provide clear explanations and examples for GPA calculations.
Assumption to check: Some users find the GPA calculations confusing.
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Grade Corner is the fastest way for students and parents to check grades, schedules, assignments, and attendance as part of your daily routine without logging in every time. Compatible with Aspen, Infinite Campus (beta), and PowerSchool (beta). This app is an independent tool students may use to calculate and track their own grades. === GRADE CORNER PREMIUM We are committed to providing every student full access to their grades without advertisements. We offer the following additional functionality to support the ongoing development of the app: - Grade Calculator — see your true percentage including missing assignments - Add hypothetical future assignments to see how they'd affect your grade - Edit current assignments to plan makeup work Important: The Grade Calculator is for estimation only and does not guarantee your final score. === PRIVACY & ENDORSEMENTS Grade Corner is a member of the Student Data Privacy Consortium (SDPC) and is available for schools to endorse in Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. === SUPPORTED SCHOOL DISTRICTS - Chicago Public Schools - Washington, DC Public Schools - Many districts across Massachusetts, Maine, New Hampshire, Rhode Island, and Vermont - MySchoolSask and MyEducation BC - MyOntarioEdu - And more === COMMON QUESTIONS Q: Do I need an existing account with my school's grading system? A: Yes. Grade Corner is a companion app — it uses your existing gradebook credentials. If you don't know yours, ask your school administrator. Q: How often are grades updated? A: As soon as teachers post them. When they update grades in the gradebook, you'll see the changes on your next refresh. Q: Is this app officially supported by my school district? A: Sometimes. Grade Corner was built independently by a parent with two kids in DC Public Schools. We're working on more official endorsements — the current list lives on our website. === DISCLAIMERS Grade Corner is not affiliated, associated, authorized, endorsed by, or in any way officially connected with Follett School Solutions (Aspen Student Information System), Infinite Campus, Inc., PowerSchool Group LLC, or any of the school districts listed above, unless otherwise stated. Aspen is a trademark of Follett School Solutions. Infinite Campus is a trademark of Infinite Campus, Inc. PowerSchool is a trademark of PowerSchool Group LLC. All trademarks are the property of their respective owners. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
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BUILD KIT DIFFICULTY
Advanced
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.
